JAG (7 p.m., Ch. 2): Stretching credulity, Patrick serves on the jury in a murder trial that finds Mac and Harm on opposite sides.
InStyle Celebrity Weddings II (7 p.m., Ch. 5): Fabulous ceremonies of the nouveau riche.
That '70s Show (7 p.m., Ch. 13): Eric is quite taken with his cousin.
Gilmore Girls (7 p.m., Ch. 30): Lorelei can't come up with the money to deal with a termite infestation.
Nova (7 p.m., Ch. 7): "Neanderthals on Trial" investigates what happened to this group and how they were related to humans.
Undeclared (7:30 p.m., Ch. 13): It's parents' day on campus.
The Guardian (8 p.m., Ch. 2): Nick contests a will.
Frasier (8 p.m., Ch. 5): Frasier shares the airwaves with a group of teens.
The Secret Life of the Brain (8 p.m., Ch. 7): First of a five-part series that explores the human brain.
24 (8 p.m., Ch. 13): Jack can't get the Secret Service to believe his story.
Mark Twain (8 p.m., Ch. 11): First of a very good two-part biography.
Scrubs (8:30 p.m., Ch. 5): J.D. has a girlfriend, and Elliott is jealous.
Judging Amy (9 p.m., Ch. 2): A teen who jokes about a Columbine-like attack is hauled into court.
Dateline (9 p.m., Ch. 5): Paula Poundstone is interviewed.